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REEF CHECK FOUNDATION

EIN 95-4858649 WESTLAKE VILLAGE, CA

Browse the largest nonprofits in California

Revenue 2024
$1,647,795
Expenses 2024
$1,571,871

Program services were 81.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C32
Classification
2000
Street
5760 LINDERO CANYON RD 1116

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

Leading Citizen scientists to promote stewardship of sustainable reef communities worldwide.

Activities or mission (Part I)

The Reef Check Foundation is dedicated to the conservation of coral and rocky-reef ecosystems around the world. Our mission is to empower communities at the local level to protect and restore reefs worldwide through grassroots research, conservation, and education efforts. With headquarters in Southern California and locally run chapters all over the world, Reef Check has built a global network of more than 10,000 trained volunteers who monitor reefs in more than 40 countries and territories, resulting in the most extensive standardized, long-term monitoring dataset in the world. One of our key achievements is our role in the establishment and management of marine protected areas (MPAs) in the Philippines, Indonesia, Brunei, and Dominican Republic. These MPAs play a crucial role in preserving the biodiversity and health of coral reef ecosystems. Our grassroots approach focuses on training volunteer citizen scientists who collect scientific data and engage in conservation activities rel

  • Reef Check Foundation performs three vital tasks necessary to promote stewardship of sustainable reef communities worldwide: 1) We train and organize teams of local volunteer citizen scientist divers. They collect data on reef health and assess climate change impacts on their reefs. Their work produces reliable information used by marine resource managers, scientists, and policymakers to make science-based ocean management and conservation decisions. 2) We promote public education about reefs and the ocean. Our immersive education programs train participants to understand the threats marine ecosystems face and provide them with the tools to become ocean stewards. 3) We develop ecologically sound and economically sustainable solutions for reef conservation and restoration.

    Expenses $1,284,398

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Jan Freiwald

    EXECUTIVE DIRECTOR

    Total calculated
    $130,000
    From this org
    $130,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    40

  • Brooke Truesdale

    DIRECTOR OF DEVELOPMENT

    Total calculated
    $105,000
    From this org
    $105,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    40

  • Robert McClatchy

    co-board chair

    Total calculated
    $0
    Hours/week
    5

  • Robert Kugel

    Treasurer

    Total calculated
    $0
    Hours/week
    5

  • Chris Glaeser

    Director

    Total calculated
    $0
    Hours/week
    5

  • Julie Rubash

    Secretary

    Total calculated
    $0
    Hours/week
    5

  • Sue Chen

    Director

    Total calculated
    $0
    Hours/week
    5

  • Evan Birenbaum

    Director

    Total calculated
    $0
    Hours/week
    5

  • Matthew Bullock

    Director

    Total calculated
    $0
    Hours/week
    5

  • Helen Brierley

    CO-BOARD CHAIR

    Total calculated
    $0
    Hours/week
    5

  • Scott Gietler

    Director

    Total calculated
    $0
    Hours/week
    5

  • Mark D Martin

    Director

    Total calculated
    $0
    Hours/week
    5

  • Blake Cornwell

    Director

    Total calculated
    $0
    Hours/week
    5

  • Cynthia Issel

    Director

    Total calculated
    $0
    Hours/week
    5

  • William McIlvene

    Director

    Total calculated
    $0
    Hours/week
    5

  • Sari Kern

    Director

    Total calculated
    $0
    Hours/week
    5

  • Art Levitt

    Director

    Total calculated
    $0
    Hours/week
    5

  • Linden Wolbert

    Director

    Total calculated
    $0
    Hours/week
    5

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $1,647,795
    Expenses
    $1,571,871
    Contributions
    $1,581,617
    Grants paid
    $0
  • 2023
    Revenue
    $1,418,196
    Expenses
    $1,640,134
    Contributions
    $700,575
    Grants paid
    $0
  • 2022
    Revenue
    $1,693,971
    Expenses
    $1,829,768
    Contributions
    $936,235
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2024 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2021 · 990

    Revenue
    $1,315,658
    Expenses
    $1,284,740
    Assets (EOY)
    $731,099

  • 2021 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2021 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2020 · 990

    Revenue
    $1,128,228
    Expenses
    $1,019,243
    Assets (EOY)
    $667,437

  • 2019 · 990

    Revenue
    $980,314
    Expenses
    $954,370
    Assets (EOY)
    $304,038

  • 2018 · 990

    Revenue
    $1,001,339
    Expenses
    $1,014,188
    Assets (EOY)
    $291,254

  • 2017 · 990

    Revenue
    $1,129,442
    Expenses
    $1,031,933
    Assets (EOY)
    $315,443

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.